1 files changed, 11 insertions, 10 deletions

diff --git a/host.c b/host.c
index b6e68dd..2087761 100644
--- a/host.c
+++ b/host.c
@@ -21,22 +21,23 @@ struct in_net {
 POPCNT(32)
 unsigned int power2[] = { 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536, 131072, 262144, 524288, 1048576, 2097152, 4194304, 8388608, 16777216, 33554432, 67108864, 134217728, 268435456, 536870912, 1073741824, 2147483648 }; /* ah yes, libmath */
 /* not needed end */
-struct in_addr host (struct in_net n, int h /* consecutive number of the host in the network */) {
+struct in_net host (struct in_net n, unsigned long long int h /* number of host in the network */) {
 	n.addr.s_addr = ntohl(n.addr.s_addr & n.mask.s_addr);
 	n.mask.s_addr = ntohl(n.mask.s_addr);
-	int c = 1;
-	int s = 0;
-	for (int i = 0; i < 32; i++)
+	unsigned long long int c = 1;
+	unsigned long int s = 0;
+	for (unsigned long int i = 0; i < 32; i++)
 		if (1 << i & ~n.mask.s_addr) {
 			if (1 << s++ & h)
 				n.addr.s_addr |= 1 << i;
-			c = c * 2;
-		}
-	if (h >= c)
-		n.addr.s_addr = 0;
+			c *= 2;			/* if we instead indicated error via addr and */
+		}				/* returned just addr, it would be impossible to */
+	n.mask.s_addr = INADDR_BROADCAST;	/* scan 0.0.0.0/0 without immediately detecting */
+	if (h >= c)				/* this false "error" and address 0.0.0.0 would */
+		n.mask.s_addr = 0;		/* in fact actually be correct. */
 	n.addr.s_addr = htonl(n.addr.s_addr);
-	return n.addr;
-}
+	return n;				/* \/= this means host h is outside network */
+} /* returns struct in_net: if .mask is not 255.255.255.255 (INADDR_BROADCAST), .addr is incorrect */
 int resolve (const char * d, uint32_t * r) {
 	struct addrinfo hints = {
 		.ai_family = AF_INET,